package com.atguigu.crowd.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.atguigu.crowd.entity.po.MemberPO;
import com.atguigu.crowd.entity.po.MemberPOExample;
import com.atguigu.crowd.entity.po.MemberPOExample.Criteria;
import com.atguigu.crowd.mapper.MemberPOMapper;
import com.atguigu.crowd.service.api.MemberService;

//在类上使用@Transactional(readOnly = true)针对查询操作设置事务属性
@Transactional(readOnly = true)
@Service
public class MemberServiceImpl implements MemberService {
	@Autowired
	private MemberPOMapper memberPOMapper;

	@Override
	public MemberPO getMemberPOByLoginAcct(String loginacct) {
	//1.创建 Example 对象
		MemberPOExample example = new MemberPOExample();
	//2.创建 Criteria 对象
		Criteria criteria = example.createCriteria();

	//3.封装查询条件
		criteria.andLoginacctEqualTo(loginacct);
	//4.执行查询
		List<MemberPO> list = memberPOMapper.selectByExample(example);
		if(list == null || list.size() == 0) {
			return null;
		}
	//5.获取结果
		return list.get(0);
	}

	@Transactional(propagation = Propagation.REQUIRES_NEW , rollbackFor = Exception.class , readOnly = false )
	@Override
	public void saveMember(MemberPO memberPO) {
		memberPOMapper.insertSelective(memberPO);
		
	}
}
